The 9/11 WTC presumption is not only important in the Fernandez firefighter pension case, but it is equally important in 9/11 WTC cancer cases. After all, how is a disabled 9/11 hero supposed to prove that 9/11 related cancers such as leukemia, lymphoma, kidney cancer, lung cancer, mesothelioma, prostate cancer, melanoma cancer of the skin, colon cancer or bladder cancer?